988 lines
44 KiB
C++
988 lines
44 KiB
C++
//
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// Copyright 2020 Electronic Arts Inc.
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//
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is free
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// software: you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed
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// in the hope that it will be useful, but with permitted additional restrictions
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// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
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// distributed with this program. You should have received a copy of the
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// GNU General Public License along with permitted additional restrictions
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// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
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/* $Header: F:\projects\c&c\vcs\code\vector.h_v 2.15 16 Oct 1995 16:47:38 JOE_BOSTIC $ */
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/***********************************************************************************************
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*** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ***
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***********************************************************************************************
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* *
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* Project Name : Command & Conquer *
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* *
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* File Name : VECTOR.H *
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* *
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* Programmer : Joe L. Bostic *
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* *
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* Start Date : 02/19/95 *
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* *
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* Last Update : March 13, 1995 [JLB] *
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* *
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*---------------------------------------------------------------------------------------------*
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* Functions: *
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* VectorClass<T>::VectorClass -- Constructor for vector class. *
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* VectorClass<T>::~VectorClass -- Default destructor for vector class. *
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* VectorClass<T>::VectorClass -- Copy constructor for vector object. *
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* VectorClass<T>::operator = -- The assignment operator. *
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* VectorClass<T>::operator == -- Equality operator for vector objects. *
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* VectorClass<T>::Clear -- Frees and clears the vector. *
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* VectorClass<T>::Resize -- Changes the size of the vector. *
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* DynamicVectorClass<T>::DynamicVectorClass -- Constructor for dynamic vector. *
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* DynamicVectorClass<T>::Resize -- Changes the size of a dynamic vector. *
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* DynamicVectorClass<T>::Add -- Add an element to the vector. *
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* DynamicVectorClass<T>::Delete -- Remove the specified object from the vector. *
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* DynamicVectorClass<T>::Delete -- Deletes the specified index from the vector. *
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* VectorClass<T>::ID -- Pointer based conversion to index number. *
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* VectorClass<T>::ID -- Finds object ID based on value. *
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* DynamicVectorClass<T>::ID -- Find matching value in the dynamic vector. *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#ifndef VECTOR_H
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#define VECTOR_H
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#ifndef false
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#define false 0
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#endif
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#ifndef true
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#define true 1
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#endif
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#include <stdlib.h>
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#include <stddef.h>
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inline void * operator new(size_t , void * pointer) {return(pointer);}
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inline void * operator new[](size_t , void * pointer) {return(pointer);}
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/**************************************************************************
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** This is a general purpose vector class. A vector is defined by this
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** class, as an array of arbitrary objects where the array can be dynamically
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** sized. Because is deals with arbitrary object types, it can handle everything.
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** As a result of this, it is not terribly efficient for integral objects (such
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** as char or int). It will function correctly, but the copy constructor and
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** equality operator could be highly optimized if the integral type were known.
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** This efficiency can be implemented by deriving an integral vector template
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** from this one in order to supply more efficient routines.
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*/
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template<class T>
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class VectorClass
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{
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public:
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VectorClass(unsigned size=0, T const * array=0);
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VectorClass(VectorClass<T> const &); // Copy constructor.
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virtual ~VectorClass(void);
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T & operator[](unsigned index) {return(Vector[index]);};
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T const & operator[](unsigned index) const {return(Vector[index]);};
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virtual VectorClass<T> & operator =(VectorClass<T> const &); // Assignment operator.
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virtual int operator == (VectorClass<T> const &) const; // Equality operator.
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virtual int Resize(unsigned newsize, T const * array=0);
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virtual void Clear(void);
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unsigned Length(void) const {return VectorMax;};
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virtual int ID(T const * ptr); // Pointer based identification.
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virtual int ID(T const & ptr); // Value based identification.
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protected:
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/*
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** This is a pointer to the allocated vector array of elements.
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*/
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T * Vector;
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/*
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** This is the maximum number of elements allowed in this vector.
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*/
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unsigned VectorMax;
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/*
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** Does the vector data pointer refer to memory that this class has manually
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** allocated? If so, then this class is responsible for deleting it.
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*/
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unsigned IsAllocated:1;
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};
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/**************************************************************************
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** This derivative vector class adds the concept of adding and deleting
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** objects. The objects are packed to the beginning of the vector array.
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** If this is instantiated for a class object, then the assignment operator
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** and the equality operator must be supported. If the vector allocates its
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** own memory, then the vector can grow if it runs out of room adding items.
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** The growth rate is controlled by setting the growth step rate. A growth
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** step rate of zero disallows growing.
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*/
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template<class T>
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class DynamicVectorClass : public VectorClass<T>
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{
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public:
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DynamicVectorClass(unsigned size=0, T const * array=0);
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// Change maximum size of vector.
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virtual int Resize(unsigned newsize, T const * array=0);
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// Resets and frees the vector array.
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virtual void Clear(void) {ActiveCount = 0;VectorClass<T>::Clear();};
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// Fetch number of "allocated" vector objects.
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int Count(void) const {return(ActiveCount);};
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// Add object to vector (growing as necessary).
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int Add(T const & object);
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int Add_Head(T const & object);
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// Delete object just like this from vector.
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int Delete(T const & object);
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// Delete object at this vector index.
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int Delete(int index);
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// Deletes all objects in the vector.
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void Delete_All(void) {ActiveCount = 0;};
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// Set amount that vector grows by.
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int Set_Growth_Step(int step) {return(GrowthStep = step);};
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// Fetch current growth step rate.
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int Growth_Step(void) {return GrowthStep;};
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virtual int ID(T const * ptr) {return(VectorClass<T>::ID(ptr));};
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virtual int ID(T const & ptr);
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protected:
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/*
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** This is a count of the number of active objects in this
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** vector. The memory array often times is bigger than this
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** value.
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*/
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int ActiveCount;
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/*
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** If there is insufficient room in the vector array for a new
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** object to be added, then the vector will grow by the number
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** of objects specified by this value. This is controlled by
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** the Set_Growth_Step() function.
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*/
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int GrowthStep;
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};
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/**************************************************************************
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** A fixed-size array of dynamic vectors.
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*/
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template<class T, int COUNT, int FIRST = 0, int DEFAULT = FIRST>
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class DynamicVectorArrayClass
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{
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public:
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static const int COUNT = COUNT;
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DynamicVectorArrayClass() : Active(DEFAULT) {}
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void Set_Active_Context(int active)
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{
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Active = active;
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}
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void Clear_All()
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{
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for (int i = FIRST; i < COUNT; ++i)
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{
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Clear(i);
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}
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}
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void Clear()
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{
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Clear(Active);
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}
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int Count() const
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{
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return Count(Active);
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}
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int Add(T const & object)
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{
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return Add(Active, object);
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}
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int Add_Head(T const & object)
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{
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return Add_Head(Active, object);
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}
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int Delete(T const & object)
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{
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return Delete(Active, object);
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}
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int Delete_All(T const & object)
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{
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int count = 0;
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for (int i = FIRST; i < COUNT; ++i)
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{
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count += Delete(i, object);
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}
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return count;
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}
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int Delete_All_Except(T const & object, int except)
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{
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int count = 0;
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for (int i = FIRST; i < COUNT; ++i)
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{
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if (except != i)
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{
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count += Delete(i, object);
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}
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}
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return count;
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}
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int Delete(int index)
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{
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return Delete(Active, index);
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}
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T & operator[](unsigned index)
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{
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return Collection[Active][index];
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}
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T const & operator[](unsigned index) const
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{
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return Collection[Active][index];
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}
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void Clear(int context)
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{
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Collection[context].Clear();
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}
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int Count(int context) const
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{
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return Collection[context].Count();
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}
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int Add(int context, T const & object)
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{
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return Collection[context].Add(object);
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}
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int Add_Head(int context, T const & object)
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{
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return Collection[context].Add(object);
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}
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int Delete(int context, T const & object)
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{
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return Collection[context].Delete(object);
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}
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int Delete(int context, int index)
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{
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return Collection[context].Delete(index);
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}
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int Raw_Count() const
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{
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return COUNT;
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}
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DynamicVectorClass<T> & Raw()
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{
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return Collection[Active];
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}
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DynamicVectorClass<T> & Raw(int context)
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{
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return Collection[context];
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}
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private:
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DynamicVectorClass<T> Collection[COUNT];
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int Active;
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};
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/**************************************************************************
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** This is a derivative of a vector class that supports boolean flags. Since
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** a boolean flag can be represented by a single bit, this class packs the
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** array of boolean flags into an array of bytes containing 8 boolean values
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** each. For large boolean arrays, this results in an 87.5% savings. Although
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** the indexing "[]" operator is supported, DO NOT pass pointers to sub elements
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** of this bit vector class. A pointer derived from the indexing operator is
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** only valid until the next call. Because of this, only simple
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** direct use of the "[]" operator is allowed.
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*/
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class BooleanVectorClass
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{
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public:
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BooleanVectorClass(unsigned size=0, unsigned char * array=0);
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BooleanVectorClass(BooleanVectorClass const & vector);
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// Assignment operator.
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BooleanVectorClass & operator =(BooleanVectorClass const & vector);
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// Equivalency operator.
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int operator == (BooleanVectorClass const & vector);
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// Fetch number of boolean objects in vector.
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int Length(void) {return BitCount;};
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// Set all boolean values to false;
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void Reset(void);
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// Set all boolean values to true.
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void Set(void);
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// Resets vector to zero length (frees memory).
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void Clear(void);
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// Change size of this boolean vector.
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int Resize(unsigned size);
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// Fetch reference to specified index.
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bool const & operator[](int index) const {
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if (LastIndex != index) Fixup(index);
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return(Copy);
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};
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bool & operator[](int index) {
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if (LastIndex != index) Fixup(index);
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return(Copy);
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};
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// Quick check on boolean state.
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bool Is_True(int index) const {
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if (index == LastIndex) return(Copy);
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return(Get_Bit(&BitArray[0], index) ? true : false);
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};
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// Find first index that is false.
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int First_False(void) const {
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if (LastIndex != -1) Fixup(-1);
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int retval = First_False_Bit(&BitArray[0]);
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if (retval < BitCount) return(retval);
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/*
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** Failure to find a false boolean value in the vector. Return this
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** fact in the form of an invalid index number.
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*/
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return(-1);
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}
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// Find first index that is true.
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int First_True(void) const {
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if (LastIndex != -1) Fixup(-1);
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int retval = First_True_Bit(&BitArray[0]);
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if (retval < BitCount) return(retval);
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/*
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** Failure to find a true boolean value in the vector. Return this
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** fact in the form of an invalid index number.
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*/
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return(-1);
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}
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private:
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void Fixup(int index=-1) const;
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/*
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** This is the number of boolean values in the vector. This value is
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** not necessarily a multiple of 8, even though the underlying character
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** vector contains a multiple of 8 bits.
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*/
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int BitCount;
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/*
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** This is a referential copy of an element in the bit vector. The
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** purpose of this copy is to allow normal reference access to this
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** object (for speed reasons). This hides the bit packing scheme from
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** the user of this class.
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*/
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bool Copy;
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/*
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** This records the index of the value last fetched into the reference
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** boolean variable. This index is used to properly restore the value
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** when the reference copy needs updating.
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*/
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int LastIndex;
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/*
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** This points to the allocated bitfield array.
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*/
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VectorClass<unsigned char> BitArray;
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};
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/***********************************************************************************************
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* VectorClass<T>::VectorClass -- Constructor for vector class. *
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* *
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* This constructor for the vector class is passed the initial size of the vector and an *
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* optional pointer to a preallocated block of memory that the vector will be placed in. *
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* If this optional pointer is NULL (or not provided), then the vector is allocated out *
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* of free store (with the "new" operator). *
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* *
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* INPUT: size -- The number of elements to initialize this vector to. *
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* *
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* array -- Optional pointer to a previously allocated memory block to hold the *
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* vector. *
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* *
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* OUTPUT: none *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 03/10/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
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VectorClass<T>::VectorClass(unsigned size, T const * array)
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{
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Vector = 0;
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VectorMax = size;
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IsAllocated = false;
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/*
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** Allocate the vector. The default constructor will be called for every
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** object in this vector.
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*/
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if (size) {
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if (array) {
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Vector = new((void*)array) T[size];
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} else {
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Vector = new T[size];
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IsAllocated = true;
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}
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}
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}
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/***********************************************************************************************
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* VectorClass<T>::~VectorClass -- Default destructor for vector class. *
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* *
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* This is the default destructor for the vector class. It will deallocate any memory *
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* that it may have allocated. *
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* *
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* INPUT: none *
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* *
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* OUTPUT: none *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 03/10/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
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VectorClass<T>::~VectorClass(void)
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{
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VectorClass<T>::Clear();
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}
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/***********************************************************************************************
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* VectorClass<T>::VectorClass -- Copy constructor for vector object. *
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* *
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* This is the copy constructor for the vector class. It will duplicate the provided *
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* vector into the new vector being created. *
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* *
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* INPUT: vector -- Reference to the vector to use as a copy. *
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* *
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* OUTPUT: none *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 03/10/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
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VectorClass<T>::VectorClass(VectorClass<T> const & vector)
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{
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VectorMax = 0;
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IsAllocated = false;
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Vector = 0;
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*this = vector;
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}
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/***********************************************************************************************
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* VectorClass<T>::operator = -- The assignment operator. *
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* *
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* This the the assignment operator for vector objects. It will alter the existing lvalue *
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* vector to duplicate the rvalue one. *
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* *
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* INPUT: vector -- The rvalue vector to copy into the lvalue one. *
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* *
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* OUTPUT: Returns with reference to the newly copied vector. *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 03/10/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
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VectorClass<T> & VectorClass<T>::operator =(VectorClass<T> const & vector)
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{
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Clear();
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VectorMax = vector.Length();
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if (VectorMax) {
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Vector = new T[VectorMax];
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if (Vector) {
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IsAllocated = true;
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for (int index = 0; index < (int)VectorMax; index++) {
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Vector[index] = vector[index];
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}
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}
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} else {
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Vector = 0;
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IsAllocated = false;
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}
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return(*this);
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}
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/***********************************************************************************************
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* VectorClass<T>::operator == -- Equality operator for vector objects. *
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* *
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* This operator compares two vectors for equality. It does this by performing an object *
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* by object comparison between the two vectors. *
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* *
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* INPUT: vector -- The right vector expression. *
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* *
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* OUTPUT: bool; Are the two vectors essentially equal? (do they contain comparable elements *
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* in the same order?) *
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* *
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* WARNINGS: The equality operator must exist for the objects that this vector contains. *
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* *
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* HISTORY: *
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* 03/10/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
|
|
int VectorClass<T>::operator == (VectorClass<T> const & vector) const
|
|
{
|
|
if (VectorMax == vector.Length()) {
|
|
for (int index = 0; index < (int)VectorMax; index++) {
|
|
if (Vector[index] != vector[index]) {
|
|
return(false);
|
|
}
|
|
}
|
|
return(true);
|
|
}
|
|
return(false);
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* VectorClass<T>::ID -- Pointer based conversion to index number. *
|
|
* *
|
|
* Use this routine to convert a pointer to an element in the vector back into the index *
|
|
* number of that object. This routine ONLY works with actual pointers to object within *
|
|
* the vector. For "equivalent" object index number (such as with similar integral values) *
|
|
* then use the "by value" index number ID function. *
|
|
* *
|
|
* INPUT: pointer -- Pointer to an actual object in the vector. *
|
|
* *
|
|
* OUTPUT: Returns with the index number for the object pointed to by the parameter. *
|
|
* *
|
|
* WARNINGS: This routine is only valid for actual pointers to object that exist within *
|
|
* the vector. All other object pointers will yield undefined results. *
|
|
* *
|
|
* HISTORY: *
|
|
* 03/13/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
template<class T>
|
|
inline int VectorClass<T>::ID(T const * ptr)
|
|
{
|
|
return(((unsigned long)ptr - (unsigned long)&(*this)[0]) / sizeof(T));
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* VectorClass<T>::ID -- Finds object ID based on value. *
|
|
* *
|
|
* Use this routine to find the index value of an object with equivalent value in the *
|
|
* vector. Typical use of this would be for integral types. *
|
|
* *
|
|
* INPUT: object -- Reference to the object that is to be looked up in the vector. *
|
|
* *
|
|
* OUTPUT: Returns with the index number of the object that is equivalent to the one *
|
|
* specified. If no matching value could be found then -1 is returned. *
|
|
* *
|
|
* WARNINGS: none *
|
|
* *
|
|
* HISTORY: *
|
|
* 03/13/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
template<class T>
|
|
int VectorClass<T>::ID(T const & object)
|
|
{
|
|
for (int index = 0; index < (int)VectorMax; index++) {
|
|
if ((*this)[index] == object) {
|
|
return(index);
|
|
}
|
|
}
|
|
return(-1);
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* VectorClass<T>::Clear -- Frees and clears the vector. *
|
|
* *
|
|
* Use this routine to reset the vector to an empty (non-allocated) state. A vector will *
|
|
* free all allocated memory when this routine is called. In order for the vector to be *
|
|
* useful after this point, the Resize function must be called to give it element space. *
|
|
* *
|
|
* INPUT: none *
|
|
* *
|
|
* OUTPUT: none *
|
|
* *
|
|
* WARNINGS: none *
|
|
* *
|
|
* HISTORY: *
|
|
* 03/10/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
template<class T>
|
|
void VectorClass<T>::Clear(void)
|
|
{
|
|
if (Vector && IsAllocated) {
|
|
delete[] Vector;
|
|
Vector = 0;
|
|
}
|
|
IsAllocated = false;
|
|
VectorMax = 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* VectorClass<T>::Resize -- Changes the size of the vector. *
|
|
* *
|
|
* This routine is used to change the size (usually to increase) the size of a vector. This *
|
|
* is the only way to increase the vector's working room (number of elements). *
|
|
* *
|
|
* INPUT: newsize -- The desired size of the vector. *
|
|
* *
|
|
* array -- Optional pointer to a previously allocated memory block that the *
|
|
* array will be located in. If this parameter is not supplied, then *
|
|
* the array will be allocated from free store. *
|
|
* *
|
|
* OUTPUT: bool; Was the array resized successfully? *
|
|
* *
|
|
* WARNINGS: Failure to succeed could be the result of running out of memory. *
|
|
* *
|
|
* HISTORY: *
|
|
* 03/10/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
template<class T>
|
|
int VectorClass<T>::Resize(unsigned newsize, T const * array)
|
|
{
|
|
if (newsize) {
|
|
|
|
/*
|
|
** Allocate a new vector of the size specified. The default constructor
|
|
** will be called for every object in this vector.
|
|
*/
|
|
T * newptr;
|
|
if (!array) {
|
|
newptr = new T[newsize];
|
|
} else {
|
|
newptr = new((void*)array) T[newsize];
|
|
}
|
|
if (!newptr) {
|
|
return(false);
|
|
}
|
|
|
|
/*
|
|
** If there is an old vector, then it must be copied (as much as is feasable)
|
|
** to the new vector.
|
|
*/
|
|
if (Vector) {
|
|
|
|
/*
|
|
** Copy as much of the old vector into the new vector as possible. This
|
|
** presumes that there is a functional assignment operator for each
|
|
** of the objects in the vector.
|
|
*/
|
|
int copycount = (newsize < VectorMax) ? newsize : VectorMax;
|
|
for (int index = 0; index < copycount; index++) {
|
|
newptr[index] = Vector[index];
|
|
}
|
|
|
|
/*
|
|
** Delete the old vector. This might cause the destructors to be called
|
|
** for all of the old elements. This makes the implementation of suitable
|
|
** assignment operator very important. The default assigment operator will
|
|
** only work for the simplist of objects.
|
|
*/
|
|
if (IsAllocated) {
|
|
delete[] Vector;
|
|
Vector = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
** Assign the new vector data to this class.
|
|
*/
|
|
Vector = newptr;
|
|
VectorMax = newsize;
|
|
IsAllocated = (Vector && !array);
|
|
|
|
} else {
|
|
|
|
/*
|
|
** Resizing to zero is the same as clearing the vector.
|
|
*/
|
|
Clear();
|
|
}
|
|
return(true);
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* DynamicVectorClass<T>::DynamicVectorClass -- Constructor for dynamic vector. *
|
|
* *
|
|
* This is the normal constructor for the dynamic vector class. It is similar to the normal *
|
|
* vector class constructor. The vector is initialized to contain the number of elements *
|
|
* specified in the "size" parameter. The memory is allocated from free store unless the *
|
|
* optional array parameter is provided. In this case it will place the vector at the *
|
|
* memory location specified. *
|
|
* *
|
|
* INPUT: size -- The maximum number of objects allowed in this vector. *
|
|
* *
|
|
* array -- Optional pointer to the memory area to place the vector at. *
|
|
* *
|
|
* OUTPUT: none *
|
|
* *
|
|
* WARNINGS: none *
|
|
* *
|
|
* HISTORY: *
|
|
* 03/10/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
template<class T>
|
|
DynamicVectorClass<T>::DynamicVectorClass(unsigned size, T const * array)
|
|
: VectorClass<T>(size, array)
|
|
{
|
|
GrowthStep = 10;
|
|
ActiveCount = 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* DynamicVectorClass<T>::Resize -- Changes the size of a dynamic vector. *
|
|
* *
|
|
* Use this routine to change the size of the vector. The size changed is the maximum *
|
|
* number of allocated objects within this vector. If a memory buffer is provided, then *
|
|
* the vector will be located there. Otherwise, the memory will be allocated out of free *
|
|
* store. *
|
|
* *
|
|
* INPUT: newsize -- The desired maximum size of this vector. *
|
|
* *
|
|
* array -- Optional pointer to a previosly allocated memory array. *
|
|
* *
|
|
* OUTPUT: bool; Was vector successfully resized according to specifications? *
|
|
* *
|
|
* WARNINGS: Failure to resize the vector could be the result of lack of free store. *
|
|
* *
|
|
* HISTORY: *
|
|
* 03/10/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
template<class T>
|
|
int DynamicVectorClass<T>::Resize(unsigned newsize, T const * array)
|
|
{
|
|
if (VectorClass<T>::Resize(newsize, array)) {
|
|
if (Length() < (unsigned)ActiveCount) ActiveCount = Length();
|
|
return(true);
|
|
}
|
|
return(false);
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* DynamicVectorClass<T>::ID -- Find matching value in the dynamic vector. *
|
|
* *
|
|
* Use this routine to find a matching object (by value) in the vector. Unlike the base *
|
|
* class ID function of similar name, this one restricts the scan to the current number *
|
|
* of valid objects. *
|
|
* *
|
|
* INPUT: object -- A reference to the object that a match is to be found in the *
|
|
* vector. *
|
|
* *
|
|
* OUTPUT: Returns with the index number of the object that is equivalent to the one *
|
|
* specified. If no equivalent object could be found then -1 is returned. *
|
|
* *
|
|
* WARNINGS: none *
|
|
* *
|
|
* HISTORY: *
|
|
* 03/13/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
template<class T>
|
|
int DynamicVectorClass<T>::ID(T const & object)
|
|
{
|
|
for (int index = 0; index < Count(); index++) {
|
|
if ((*this)[index] == object) return(index);
|
|
}
|
|
return(-1);
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* DynamicVectorClass<T>::Add -- Add an element to the vector. *
|
|
* *
|
|
* Use this routine to add an element to the vector. The vector will automatically be *
|
|
* resized to accomodate the new element IF the vector was allocated previosly and the *
|
|
* growth rate is not zero. *
|
|
* *
|
|
* INPUT: object -- Reference to the object that will be added to the vector. *
|
|
* *
|
|
* OUTPUT: bool; Was the object added successfully? If so, the object is added to the end *
|
|
* of the vector. *
|
|
* *
|
|
* WARNINGS: none *
|
|
* *
|
|
* HISTORY: *
|
|
* 03/10/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
template<class T>
|
|
int DynamicVectorClass<T>::Add(T const & object)
|
|
{
|
|
if ((unsigned)ActiveCount >= Length()) {
|
|
if ((IsAllocated || !VectorMax) && GrowthStep > 0) {
|
|
if (!Resize(Length() + GrowthStep)) {
|
|
|
|
/*
|
|
** Failure to increase the size of the vector is an error condition.
|
|
** Return with the error flag.
|
|
*/
|
|
return(false);
|
|
}
|
|
} else {
|
|
|
|
/*
|
|
** Increasing the size of this vector is not allowed! Bail this
|
|
** routine with the error code.
|
|
*/
|
|
return(false);
|
|
}
|
|
}
|
|
|
|
/*
|
|
** There is room for the new object now. Add it to the end of the object vector.
|
|
*/
|
|
(*this)[ActiveCount++] = object;
|
|
return(true);
|
|
}
|
|
|
|
|
|
template<class T>
|
|
int DynamicVectorClass<T>::Add_Head(T const & object)
|
|
{
|
|
if ((unsigned)ActiveCount >= Length()) {
|
|
if ((IsAllocated || !VectorMax) && GrowthStep > 0) {
|
|
if (!Resize(Length() + GrowthStep)) {
|
|
|
|
/*
|
|
** Failure to increase the size of the vector is an error condition.
|
|
** Return with the error flag.
|
|
*/
|
|
return(false);
|
|
}
|
|
} else {
|
|
|
|
/*
|
|
** Increasing the size of this vector is not allowed! Bail this
|
|
** routine with the error code.
|
|
*/
|
|
return(false);
|
|
}
|
|
}
|
|
|
|
/*
|
|
** There is room for the new object now. Add it to the end of the object vector.
|
|
*/
|
|
if (ActiveCount) {
|
|
memmove(&(*this)[1], &(*this)[0], ActiveCount * sizeof(T));
|
|
}
|
|
(*this)[0] = object;
|
|
ActiveCount++;
|
|
// (*this)[ActiveCount++] = object;
|
|
return(true);
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* DynamicVectorClass<T>::Delete -- Remove the specified object from the vector. *
|
|
* *
|
|
* This routine will delete the object referenced from the vector. All objects in the *
|
|
* vector that follow the one deleted will be moved "down" to fill the hole. *
|
|
* *
|
|
* INPUT: object -- Reference to the object in this vector that is to be deleted. *
|
|
* *
|
|
* OUTPUT: bool; Was the object deleted successfully? This should always be true. *
|
|
* *
|
|
* WARNINGS: Do no pass a reference to an object that is NOT part of this vector. The *
|
|
* results of this are undefined and probably catastrophic. *
|
|
* *
|
|
* HISTORY: *
|
|
* 03/10/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
template<class T>
|
|
int DynamicVectorClass<T>::Delete(T const & object)
|
|
{
|
|
int index = ID(object);
|
|
if (index != -1){
|
|
return(Delete(index));
|
|
}else{
|
|
return (false);
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* DynamicVectorClass<T>::Delete -- Deletes the specified index from the vector. *
|
|
* *
|
|
* Use this routine to delete the object at the specified index from the objects in the *
|
|
* vector. This routine will move all the remaining objects "down" in order to fill the *
|
|
* hole. *
|
|
* *
|
|
* INPUT: index -- The index number of the object in the vector that is to be deleted. *
|
|
* *
|
|
* OUTPUT: bool; Was the object index deleted successfully? Failure might mean that the index *
|
|
* specified was out of bounds. *
|
|
* *
|
|
* WARNINGS: none *
|
|
* *
|
|
* HISTORY: *
|
|
* 03/10/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
template<class T>
|
|
int DynamicVectorClass<T>::Delete(int index)
|
|
{
|
|
if (index < ActiveCount) {
|
|
ActiveCount--;
|
|
|
|
/*
|
|
** If there are any objects past the index that was deleted, copy those
|
|
** objects down in order to fill the hole. A simple memory copy is
|
|
** not sufficient since the vector could contain class objects that
|
|
** need to use the assignment operator for movement.
|
|
*/
|
|
for (int i = index; i < ActiveCount; i++) {
|
|
(*this)[i] = (*this)[i+1];
|
|
}
|
|
return(true);
|
|
}
|
|
return(false);
|
|
}
|
|
|
|
#endif |